Bell P-39 Airacobra. 1st picture is the XP-39 prototype in which the mid mounted Allison V-12 WAS supercharged. Also note the smaller, different shaped vertical fin & rudder than that of the production Birds in other photos.
The powers that were made the erroneous decision to NOT supercharge production P-39s which resulted in poor performance at higher altitudes, limiting the P-39's versatility. The Russians however had great success with Airacobra & were the users of the majority of planes built. Also the P-39 was the first tri-cycle geared fighter. The propeller driveshaft went through cockpit underneath pilots seat and forward right between his legs(YIKES).
A sexy looking Bird IMO.....gotta love the mid-engined airplane.....
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